These results are not surprising to me but it's great that they were published because people have been very quick to jump on the hype bandwagon for these kinds

These results are not surprising to me but it's great that they were published because people have been very quick to jump on the hype bandwagon for these kinds of projects. I think that the idea of the isomorphic JavaScript app never actually worked in practice. MeteorJS already had a really good go at it. Sharing JavaScript modules between the client and the server is great but when you start to pretend that the backend and the frontend are the same environment, you're bound to run into all sorts of problems and create inefficiencies. The kind of performance penalty incurred by server-rendered React is bound to make your system vulnerable to DoS attacks or at best make it unnecessarily expensive to operate. When programming abstractions shift too far away from the reality of the underlying architecture, you will start paying dearly and the cost won't be worth it in the long run. In my opinion, the client-server divide is a fundamental aspect of multiuser applications and no amount of abstraction can make it go away.